Firm about boring worthless stuff, a TV genre (9)
I believe the answer is:
docudrama
'tv genre' is the definition.
(docudrama is a genre of TV programme)
'firm about boring worthless stuff a' is the wordplay.
I cannot quite understand how this works, but
'about' could be 'c' (circa) and 'c' is found within the answer.
'stuff' could be 'ram' (ram can mean to stuff or push) and 'ram' is found in the answer.
'a' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for docudrama that I've seen before include "sort of play" , "realistic fiction" , "TV play based on real events" , "Dramatised TV programme based on real events" .)